7. Air Preheaters
In this fossil fired power plant, drains are used to remove condensate
from the air preheaters. This steam main is a high pressure / high
temperature line in the plant. Air preheaters use steam to heat the outside
air via steam coils before entering the boiler. Air preheater drains
are situated on these units to remove start-up loads, hot running
loads, and cool-down loads.
On air preheater applications, the best steam trap design in the marketplace
is the Velan Piston and Multi-Segmented Bimetallic Steam Trap. The air preheater
application will have a “high” start-up curve, followed by a “large” load
of condensate during operation. The only other load that will be encountered
will be a “high” cool-down load when the line is de-energized.
Due to the fact that air preheaters can be high in pressure and temperature,
customers tend to weld these applications. Velan offers steam traps and “Piping
Kings” in for air preheaters in A105 Carbon Steel.
Velan will offer the “SP” Series or “SPF” Series
steam traps for air preheater applications.
Click on the following pressure range for the appropriate Velan Series Steam
Trap:
0-1500 psig
SP Series |
0-1500 psig
SPF Series |
Click on the icon to learn more about Velan
Piston and Bimetallic Design
|
Velan will offer the “Piping King” by-passable steam trap station
package for air preheater applications.
Click
on the Velan “Piping King” icon to learn more about Velan “Piping
Kings”:
Click on the Velan “Piping King” icon to view a
dimensional datasheet: